Euel-vapobizeb



VV. G. HUIVIPHREYS.

FUEL VAPORIZER. AAPPLICATION FILED SEPT.17,1917.' RENEWED OCT. 27,1919.

Patented Dec. 23, 1919.

' IZA FUEL-VAPORIZER.

incasso.

Y Specication of Letters Patent.

Patented Dec. 23, 1919.

pplication filed September 17, 1917, Serial No. 191,648. Renewed October 27, 1919. Serial No. 333,685.

To all miem t may Concern.

Be it known that l, WALTER G. HUM- PHREYs, a citizen of the United States of America, residing at maha, in the county vof Douglas and State of Nebraska, have in-l lvented certain new and useful improve cient vaporizer, occupying the minimumof space, giving the maximum of heat receiv ing and heat imparting surfaces and adapted for simultaneous intermediate fitting in both the fuel intake and exhaust ducts of an internal combustion engine.

Second, to combine both heat and impact or impingement in breaking up theV liquid condition of the oil, in a device having' no loose or operatively movable parts.

Third, to facilitate complete cleaning of the fuel duct throughout its entire length Without in any manner disconnecting the vaporizer from the two ducts in which it may be interposed. These with other minor objects hereinafter particularly described, I attain by the structure illustrated in the accompanying drawing in which- Figure 1 is a sectional view on the broken lines 1 of Figs. 2 and 3; Fig. 2, a sectional view at right angles to the View Fig. 1, and on the broken line 2 of that figure; Fig. 3, a central sectional View on the broken lines 3 of Figs. 1 and 2; and Fig. 4, is an .enlarged fragmental sectional view of the intei-lapping spaced shortened or -decurtate partitions forming the sinuous vaporizing fuel duct through the vaporizer. ln all of which views the same reference numeral in dicates like parts.

For convenience in this description it is assumed that the detachable cover or clean out plate 13 is on the face or front of the vaporizer, where it is always accessible, that the connected fuel intake pipe is a vertical duct carrying an ascendant current as indicated by the arrows 12 and that the et connected erbaust pipe carries a horizonn tally moving current as indicated by the arrows o.

The centrally disposed internal fuel-ductchamber, has side and back walls 7 of thin integral castmetal plate to quickly receive, conduct and impart the heat. This chamber is open at top and `bottom through 'the` ythreaded bosses 16 and 16, on the exterior integral top and bottom-walls of thevaporizer, for connection with the fuel intake pipe. The front of this chamber' is closed by the removable clean-out plate 13.l The exterior body Wall 17 is disposed from side to side around the back of the fuel-duct chamber and spaced away from the thin walls 7 to form and inclose the flattened exhaust duct 6, surrounding the back and sides of said chamber in a loop as shown. Said exhaust duct terminates at opposite sides in thev threaded bosses 15 and 15 for connection with the engine exhaust pipe. The top and bottom ends 18 and 18 are shaped as shown to also integrally form the top and bottom of the fuelduct chamber. i is cast open, to the extent of the inclosed chamber, with the beveledfedged rabbets 19 and 19 at the sides of the opening, to place the cleanout or cover-plate 13. secured by the screws 20.

The fuel-duct-chamber has the decurtate partit-ions 9, all integrally connected with the back of the chamber and alternately integrally based on opposite side walls of the chamber. rllhese partitions standing with their shortened ends interlapped and Vspaced. apart form thewalls of the sinuous fuel duct 8. ltis obvious, by noting Fig. 1, that this arrangement of oppositely alten nately abridged partitions gives a great length of duct in the small fuel chamber of the 'vaporizers.

At the side of the base of each partition an inclined ledge 10 is disposed in alinement with the terminal edge of the next successive partition. These ledges stand toward the terminal edges of the next successive partitions, `to stricture or reduce the duct to a thin narrow slit or discharging nozzle 11, at the end of each cross lap of the duct, through the chamber. Each of these slitnozzles delivers a thin sheet of the fuel to strike squarely against the adjacent section gf the thin wall 7'; which wall, is heated IY the duct t. These successively repted im- And the front v the exhaust current passing around in llltl cover plate is removed.

pingements of thin `sheets of the fuel against progressively-approached parts of the hot thin metal walls of the chamber, where the walls are common to beth duct-s, thoroughly break up, and vaporize the most stubborn heavy hydro-carbon oils. Kerosene or a mixt-ure of kerosene and air for fuel, driven or sucked through this vaporizer,` is transformed into a most perfect explosive charge for the engine to which the vaporizer is properly connected.

The beveled cut-away 14, on the back of the decurted edge of each partition, serves to enlarge the duct immediately following each place of impingement of the fuel against the heated plate. This gives more room for the reboundl and expansion follo\\'ing the impingement. and vaporizing action on the fuel-after each slit nozzle is passed.

It is obvious that any irreducible matter that accumulates in the thin slits, is-easily raked out of the open ended slit, when the Also that the slit may be'made so narrow that scarcely any irreducible matter will-be passed through to the engine. Also that these slits will not be easily fouled, to' a complete stoppage, like the small round or square openings in ordinary straine'rs.

I claim:

l. A fuel vaporizer, comprising a fuel duct, a heating medium duct` 'said ducts having a common heat-conducting wall, a series of constrictions in said fuel duct forming a succession of jets disposed throughout the length thereof, to repeatedly discharge the passing fuel against said heat conducting wall, and portions of the fuel duct immediately following each jet enlarged in area of cross-section.

2. A fuel vaporizer, comprising a fuel duct, a duct adapted tov carry a heating medium, said ducts having a common heatconducting wall, a series of strictures in said fuel duct to form a succession of narrow slits disposed to repeatedly discharge the conducted fuel in thin sheets against said wall.

3. A fuel vaporizer,'comprising a duct for a heating medium, a fuel duct having a wall common to both ducts, ledges in the fuel duct to form a succession of narrow transverse slots to discharge the conducted fuel in thin sheets against said common wall, and a detachable section of the wall of said fuel duct to laterally open one side thereof and one end of each slot.

'4. A fuel vaporizer comprising a heating medium du'ct of flattened cross-section and longitudinally bent to form the back an'd connected opposite sides of an inclosure` connected top and bottom inclosure walls having perforations for fuel pipe connections, horizontal decurtated partitions, alternately based on opposite side walls, interlapped and .spaced flatwise vertically in the inclosure to form a sinuous fuel duet throughout the height thereof, and a detachable front-plate to form the front wall of said sinuous fuel duct.

5. A fuel vaporizer, comprising a fuel duct, a heating medium duet, said ducts having a common heat-conducting wall, and a series of constrictions in said fuel duct forming a succession of jets disposed throughout the length thereof, to repeatedly discharge the passing fuel against said heatconducting wall, i

In testimony whereof I have affixed hereto my signature.

WALTER G. HUMPHREYS. 

